• P P Singh

      Articles written in Pramana – Journal of Physics

    • Elastic and inelastic scattering of 270 MeV3He particles from58Ni,90Zr,116Sn and208Pb

      P P Singh Q Li P Schwandt W W Jacobs M Saber E J Stephenson A Saxena S Kailas

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      Differential cross-section angular distributions for the elastic scattering of 270 MeV3He particles from58Ni,90Zr,116Sn and208Pb have been measured. Optical model analysis of the cross-sections has yielded the optical model parameters for3He particles at 270 MeV. Angular distributions have also been measured for the inelastic excitation of the low-lying levels in the above mentioned nuclei. A collective model analysis using the distorted wave Born approximation (DWBA) of these cross-sections with the distorted waves generated by the optical model parameters determined from the elastic scattering analysis, has yielded the reduced transition probability (B(EL)) values consistent with those reported in the literature.

    • Giant resonances in90Zr and116Sn

      S Kailas A Saxena P P Singh Q Chen D L Friesel P Schwandt E J Stephenson

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      The giant resonance region in90Zr and116Sn excited by 270 MeV helions has been measured up to about 35 MeV excitation energy. The low and the high energy octupole resonances are seen prominently in addition to the quadrupole and the monopole resonances. The angular distribution data for the various multipoles are satisfactorily explained by the collective model calculations. The percentatge energy weighted sum rule strengths have been determined for all the prominent resonances.

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